The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2007
Filed:
Aug. 03, 2004
Bernard P. Breen, Pittsburgh, PA (US);
Robert A. Schrecengost, Beaver, PA (US);
Stephen Niksa, Belmont, CA (US);
Bernard P. Breen, Pittsburgh, PA (US);
Robert A. Schrecengost, Beaver, PA (US);
Stephen Niksa, Belmont, CA (US);
Breen Energy Solutions, Pittsburgh, PA (US);
Abstract
In a method of removing metals such as mercury from flue gas produced by combustion devices, water or water including a calcium-containing component or water including Clanion formers or water including both a calcium-containing component and Clanion formers is injected into the flue gas in a manner so that there are sufficient amounts of these materials in the flue gas when the flue gas is at a temperature from about 250° F. to about 350° F. to retain the mercury within the aqueous phase. After the water evaporates, the oxidized mercury is retained on the dry flyash particles present in the flue gas. These flyash particles bound with the oxidized mercury are removed from the flue gas by a particulate removal device, such as an electrostatic precipitator, baghouse filter or cyclone.